sl_defs.h

/*
 * This file is part of libsidplayfp, a SID player engine.
 *
 *  Copyright (C) 2026 Leandro Nini
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
#ifndef SIDLITE_DEFS_H
#define SIDLITE_DEFS_H
 
// Compiler specifics.
#define HAVE_BUILTIN_EXPECT 1
 
// Branch prediction macros, lifted off the Linux kernel.
#if HAVE_BUILTIN_EXPECT
#  define LIKELY(x)      __builtin_expect(!!(x), 1)
#  define UNLIKELY(x)    __builtin_expect(!!(x), 0)
#else
#  define LIKELY(x)      (x)
#  define UNLIKELY(x)    (x)
#endif
 
#endif // SIDLITE_DEFS_H